django tornado getting 403 error on start - django

Question

Following a tutorial I have written a management command to start tornado and it looks like:
import signal
import time
import tornado.httpserver
import tornado.ioloop
from django.core.management.base import BaseCommand, CommandError
from privatemessages.tornadoapp import application
class Command(BaseCommand):
args = '[port_number]'
help = 'Starts the Tornado application for message handling.'
def sig_handler(self, sig, frame):
"""Catch signal and init callback"""
tornado.ioloop.IOLoop.instance().add_callback(self.shutdown)
def shutdown(self):
"""Stop server and add callback to stop i/o loop"""
self.http_server.stop()
io_loop = tornado.ioloop.IOLoop.instance()
io_loop.add_timeout(time.time() + 2, io_loop.stop)
def handle(self, *args, **options):
if len(args) == 1:
try:
port = int(args[0])
except ValueError:
raise CommandError('Invalid port number specified')
else:
port = 8888
self.http_server = tornado.httpserver.HTTPServer(application)
self.http_server.listen(port, address="127.0.0.1")
# Init signals handler
signal.signal(signal.SIGTERM, self.sig_handler)
# This will also catch KeyboardInterrupt exception
signal.signal(signal.SIGINT, self.sig_handler)
print "start"
tornado.ioloop.IOLoop.instance().start()
print "end"
Here I when I run this management command I get tornado tornado.access:403 GET /2/ (127.0.0.1) 1.92ms error
For test purpose I have printed "start" and "end". I guess when this command is executed successfully "end" should be printed.
Here only "start" is printed not "end". I guess there is something error on tornado.ioloop.IOLoop.instance().start() but I dont know what it is.
Can anyone guide me what is wrong in here ?

Answer 1

You forgot to put self.http_server.start() before starting the ioloop.
...
self.http_server = tornado.httpserver.HTTPServer(application)
self.http_server.listen(port, address="127.0.0.1")
self.http_server.start()
...
Update
Along with the httpserver start missing, are you using this library?
Your management command is exactly this one
Their tutorial is in russian and honestly, I don't read russian.
Update2:
What is see in their code, is that the url /(?P<thread_id>\d+)/ is a websocket handler:
application = tornado.web.Application([
(r"/", MainHandler),
(r'/(?P<thread_id>\d+)/', MessagesHandler),
])
...
class MessagesHandler(tornado.websocket.WebSocketHandler):
...
But the error you posted seems like something tried to access it in http via GET.
Honestly, without a debugger and the same environment, I can't figure out the issue.